Lezyne Radar React Light System Your cycling sixth sense The Lezyne Radar React System is an advanced front and rear lighting system that incorporates radar technology into bright LED lighting to deliver next-level safety and visibility. With wireless pairing between the Radar Drive rear light and React Drive front light, riders benefit from real-time vehicle detection alerts and disruptive flash patterns that maximize visibility on the road, while alerting riders to approaching traffic. Alerts can be delivered directly through the React Drive's built-in audio and visual indicators, compatible GPS bike computers, or the Radar Ally smartphone app. With up to 1200 lumens up front, 300 lumens in the rear, IPX7 waterproofing, and USB-C charging, this system is designed for total visibility and advanced radar detection to keep riders safe. Features Radar-based vehicle detection alerts riders to approaching traffic from up to 150 meters away Wireless front and rear light pairing with automatic sync and alerts, for a complete visibility and car detection system React Drive with audio and visual alerts for phone-free operation Ultra-bright light output with up to 1200 lumens front and 300 lumens rear Seven output modes including a disruptive daytime flash, and an automatic Car Alert flash mode USB-C charging for quick charging and more universal compatibility Compatible with Lezyne Radar Ally app and most GPS bike computers Specifications Front Light Output1200 lumens max Rear Light Output300 lumens max Waterproof Rating IPX7Charging USB-CWireless Connectivity Bluetooth, ANT+Mounting Universal strap mount with D-post and aero post adapters | Lezyne | Radar React Light System Matte Black